Tabbing, gluing, and folding machine



Aug. 12 1941.

M. H. SIDEBOTHAM TABBING, GLUING, AND FOLDING MACHINE Filed May 11, 19595 Sheets-Sheet l [0g/eb for fw@ Aug. 12, 1941. M. H. slDBo'l-HAMTABBING, GLUING, AND FOLDING MACHINE s sheets-sheet 2 Filed May 11, 1939Aug. 12, 1941.` M. H. smEBoTHAM 2,252,388

` TABBING, GLUING, AND FOLDING MACHINE i Filed May 11. 1939 5sheets-sheet 3 A118 12, 1941- M. H. slDEsoTHAM 2,252,388

TABB'ING, GLUING, AND FOLDING MACHINE Filed May 11, 1939 s sheets-smet 4fmfenfor M. H. VSIDEBOTHAM TABBING, GLUING, AND FOLDING MACHINE Aug. 12,1941.

5 sheets-sheet Filed lmay 11, 1939 'Patented Aug. 12, ,1941

aztzsss TABBING, GLUING, AND FOLDING MACHINE Melvin n. slaebotmm, rwestNewton, mail.,

assigner soi' one-half to `Harlow-iti. Russell,

Chelsea, Mass.

Application May 11, 1939, serial No. .273,627

A 9 claims. (01.93-36) This invention relates to the manufacture of vpaper containers by automatic machinery. 7The machine hereinafterdescribed provides for ap- 'plying a reenforcing tab or patch in preciseregister on a containerblank, and thereafter Iolding and gluing theblank to furnish a container in ilat folded condition. The tabbing unito! this machine provides for cutting and punching individual tabs orpatches from a web drawn from a supply roll, and thereafter deliveringthe tabs singly and successively in timed relation upon predeterminedadheslvely treated areas of container blanks. Containers of the typeproduced by this method and machine arevused for packaging liquids,powders and any other com.- modity which requires a sealed closure`which may be easily opened. My improved method and machine areadaptable for use wherever a tab or patch is required to be4 applied toa sheet of materialln close register. A

One of the objects of my invention is to e'ect rapid production of papervcontainers in alt folded condition with a reenforcing tab securedthereto. f

Another object of my invention is to provide a tabbing mechanismwhichwill apply tabs, in precise register, to paper blanks at high speed byautomatic machinery. v Y

Still another object of myinvention is to pro-. vide a method andmachine for making cut and scored tabs from a web of material. andthereafter applying the tabs Ato predeterminedsections of moving boxblanks.

scored blank from which the body of the container is formed.. A

Figure 8 is a plan view of the blank showing the adhesively treated areaprovided yfor securing the tab to the blank.

Figure 9 is a plan view of the blank showing the tab secured in positionupon the blank.

Other more speciiic `objects and advantages of d the invention will beapparent to persons skilled in the art as the same becomesbetter'understood by referenceto the following description, taken inlconnection with the accompanying drawings, in which I have illustratedone practical embodiment of the invention, and wherein:

Figure 1 is a side elevation of my improved machine, lwith part oftheframe and folding members broken away. 'p

Figure 2 is a plan view of Figure l.

Figure 3 is a partial section at 3--3 of Figure 2.

Figure 4 is a partial section-at 3-3 of Figure 2, showing the punchingand cutting mechanism out of contact with the tab supplying web.

Figure 5 is a partial section at B-B of Figure 2.

Figure 6 is a partial section at 6-6 of Figure 2.

'l Figure 'I represents a plan view of the cut and 55 Figure 10 is aplan view showing the blank in partly folded condition, with theadhesively treated surface of connection ilap e facing upwards.

Figure 11 is a plan view of the container in flat folded condition,after the wall folding operation has been'completed.

Figure l2 is a plan view of the tab which forms part of the containerclosure when secured to the body of the blank.

Figure 13 is a. view showing the container opened to tubular form.

Figure 14 is an (end view of Figure 13.

Figure 15 is a perspective view of the completed container inset-upcondition.

Figure 16 illustrates the tab supplying web after it has been operatedon by the shearing punch, and scoring knife.

It will aid toward an understanding of the operation of the machine andof the method of fabricating the container, to first explain the actionof the machine which effects the' production of containers in fiatfolded condition from tom closure members f. y, h, and k.` The top'closure members comprise sections marked n,

'0, p, and q.-, A cut-out u and scored lines v are provided in the topclosure member p. The scored lines v provide a1 flap element t in saidclosure member p. Figure 8` illustrates the condition of the blankafterit has been acted upon by adhesive applying mechanism which appliesadhesive to the closure'member p for the purpose of securing thereenforcing tab w (Fig. l2) thereto. Figure 9 shows the condition of theblank after the reenforcing tab w has been secured in place. Thereenforc'ing tab (Fig. 12) is provided with a U-shaped cut m, and ascored line mi, After the tab w hasv been secured in place, the blankisconveyed forward and in so moving passes over-a glue wheel whichoperates to apply a stripe of adhesive to the underside of iiapconnection e (Fig. 9). Figure l0 illustrates different mechanismsthereto. Box blanks which have been shaped,`creased and cut, as shown inFigure '1 and more fully 'described aboyermay be cut and creased by anyof the well'known .methods inlcommon use in the art. In the operation ofthe machine, box blanks of the type above described are delivered singlyand successively from'a stack on feed table 2 to the conveyor belt 3.The conveyor belt is supported and driven .by rolls 4 and 5 journaled inframe I.

acsasss 4me audition of the blank after side wan a has ent operations'are performed on three tab lections of the web. 'In other words,v lwhilecutting knife 33 is severing acompleted tab fron'r'the web. the punchingoperation is place on the next succeeding tab and a scored line :i (Fig.16) is being impressed in a third tab section. raised out of contactwith the web, the stripping pins 30, slidabiy secured in bracket 23.operate to lift the web out of contact with the punch 33. Thecompression springs 32 operate to'maintain the pins 3l in raisedposition, except whenl ward during the dieing operation. The shoul-Roll. I2 secured to shaft I4 journaled in frame I serves to support themidsection of the upper strand of the conveyor belt. The said conveyorbelt 3 operates to advance the blanks to pass under adhesive applyingroll -1 secured to shaft 8 journaled in frame I. The adhesive applyingpad 9 secured to adhesive applying roll 1 is cut to the pattern of thearea of the blank to be adhesively treated. Adhesive is applied to saidpad 3 by contact with the adheslvely coated roll I3 to which liquidadhesive is carried by roll II 4which is caused to rotate in liquidadhesive contained in reservoir I0 supported by frame I.

Said rolls II and I3 are journaled in reservoir I0.

The blank is next carried forward to the tab cutting and tab-applyingunit which operates to make and apply a tab w (Fig. 12) to thepreviunder the web and supported by bracket 29 se cured to frame I'. 'Ihe bolster carriage 31 is caused to operate up and down by shaft 33which is secured thereto. 'I'he said bolster carriage is guided by bars39 supported by frame I. Two connecting links-44 eachA having its upperend operatively secured to an end of said shaft 33; the lower end ofeach connecting link being operatively secured to eccentric shaft 42which is journaled in frame I (Fig. 5). Eccentric shaft 42 is driven by-pulley 43 secured to one end thereof. It is obvious that the rotationof eccentric shaft 42 will impart an up and down moders 3i on pis 3lserve to limit the upward motion of said pins.

From the punching, cutting, and scoring unit the prepared tabs pass tothe tab applying wheel 22, which rotates in timed relation with thecutting and scoring mechanism land with the roll 4I9 secured'to shaft 2lJournaled in side frame I. Secured to said roll I3 is a striker pad 2Imade of any suitable material such as leather, wood or rubber'. Thetabs, asthey are advanced.are gripped between wheel 22 and pad 2|. v'lheprongs of forks 24 which are slidably`l secured within wheel 22 operateto dig into-the forward end of the tabs and carry them in timedrelationI to register on the adhesively treated areas of the containerblanks as they pass under wheel 22. The prongs of forks 24 are arrangedto pierce the forward end of each tab as it comes from the cutting andscoring unit and serve to'hold the tab in engagement with wheel 22 whichcarries the tab through a semi-circular path toits p0- siticn on thecontainer blank. When each tab reaches the register point on thecontainer blank,

- the prongs of forks 24 carrying the tab are with- Y 23 and driven bypulley 4l; dowel pin 49 serves Thence the tion to bolster carriage 31;connecting links 44 knife 36, and a die recess 40. Figure 4 shows thebolster carriage 31 in raised position out of engagement with the web,while Figure 3 shows the` said bolster carriage in contact with the web.

Figure 16 illustrates a section of the web after the cutting, punchingand scoring operation has been performed. It will be obvious that withveach operation of the bolster carriage 31, differ- `pin 50 serves tomaintain shaft 23 drawn from the Aperiphery of the wheel 22 by means ofcompression spring 2l co-operating with cam recess 2i (Figs. 3 and 6)cupped in stationary shaft 23 secured in` frame I. The wheel 22 (Fig. 6)is rotatably mounted on shaft to secure wheel 22 and pulley 43 together.Dowei in stationary position. A

From the tab assembling unit each container blank is carried by conveyorbelt 2 to,pass-between pressing rolls 21 (1113.3) Vsecuredto 'shafts '2ljournaled inl frame'l Thendethe passes-to an adhesive' applying' device,compris'- ing a -glue wheel 5I driven by shaft l2 :Io'urnaled inreservoir 53 secured to frame. 'I.

tion flap e of the container blank (Figs. 9 and l0). Roll 54 rotatablymounted'on'shaft il supported by brackets Il secured to frame'l servestohold the blank in contact with the adhesive applying roll 3| as theblank is conveyed forward.

The blanks are then advanced in spaced relation tothe folding unitl'(lll'gs'lj and 2) guide bars. supported by' frame I serve to hold thetraveling blanks in contact with the conveyor After the bolster carriage31 has been` In passing over the adhesive applying wheel II a' stripeof"glue is applied to the under surface of connecvarious rolls and shaftsto operate at uniform peripheral" speed to effect travel of the blanksthrough the machine and to operate the variousy on one blank other partsofthe machine areat the same time performing other operations on otherblanks, all of said blanks following one another progressively throughthe machine and are delivered therefrom as containers in collapsedcondition as shown in Figure '11. f' 1 While the invention includes thecombined in-` strumentalities above mentioned, I wish it to beunderstood that I consider the aforesaid means not only combinativelynovel, but insofar as I am aware, certain 'of the devices going to makeup such means are new in less combinations'than the whole and somecapable of, individual use, as will be apparent from the description ofthe machine herein disclosed.

It will be apparent that. my improved methodl and machine are suitablefor many purposes other than for applying a patch or tab as illustratedin Figures 'I to 14. The container illustrated by Figures 7 to 15inclusive, is shown merely for the purpose of illustration, and itshould be understood that I do not limit myself to the production ofthis specific product. v

It is to be understood that in practice, suitable mechanisms areprovided for adjusting the several units of the machine to operate onblanks of various sizes.

Having now describedv my invention in one of its embodiments, what Iclaim is:

1 In a machine for making and aixing reenforcing tabs to sheetsy ofmaterial, a conveyor for advancing sheets singly and successively, amember carrying-a web of tab material; tab

, forming means comprising a die cutting unit hav- Ving scoring,punching and web severing devices;

means for advancing the tabs singly and successively, a tab applyingwheel having p'rongs on the periphery thereof to engage each`tab as itis-advanced, means for' rotating the wheel to deliver the tabs insuperpcsed position upon the sheets, mechanism within said wheel torelease the tab engaging me'ans, and pressing rollers for pressing thetabs against'the sheets.

2. In a machine for making and amxing reenforcing tabs to sheets ofmaterial, a conveyorv for advancing sheets singly and successively, a

lmember carrying a web of tab material; a tab forming mechanismcomprising a diecutting unit having scoring, punching and web severingdevices; a tab applying wheel having prongs on the periphery thereof toengage 'each tab as it 4 is advanced, means for delivering the tabs tosuperposed positions upon the sheets, mechanism within` said wheel torelease the tab engaging 3 means, and pressing rollers for pressing thetabs to the sheets.

3. In a container making machine of the class described, a conveyormechanism, means for applying adhesive to a predetermined area of-container blanks, a member carrying a web of reenforcing material, atab forming unit, means for advancing the prepared tabs singly andsuccessively to a tab applying wheel having prongs at' the peripherythereof, mechanism operating to'withdraw the prongs from the tabs afterthe tabs have been. registered upon the sheets, pressing rollers forfirmly pressing the tabs against the sheets, a roller for applying astripe of adhe` sive to an edge of the blank, and means for foldingopposite side areas of the blank toward each other. f

4. In a box making machine of the class described, a conveyor mechanism,means for applying adhesive to predetermined areas of box blanks, -amember carrying a web of reenforcing material, a tab forming unit, meansfor advancing the tabs singly and successively, a tab applying wheelhaving prongs on the periphery thereof to engage each tab as it isadvanced, mechanism within said wheel operating to release the tabengaging means, pressing rollers for firmly pressing the tabs againstthe sheets, a roller for a plying a stripe of adhesive to an edge offt etraveling blank, and means for folding opposite side areas of the blanktoward each other.

5. In a container making machine o f the class described, a conveyormechanism, means for applying adhesive to predetermined areas ofcontainer blanks, a member carrying a web of tab material; tab formingmeans comprising a die cutting unit having scoring. punching and websevering means; a tab applying wheel having at the periphery thereofprongs which contact and advance the prepared tabs, mechanism operatingwithin said wheel to withdrawthe prongs from engagement with the tabsafter the tabs have been .positioned on the container blanks, pressingrollers for firmly pressing the tabs to .the blanks, a roller forapplying a stripe of adthereof, means for causing the prongs to diglinto a tab, mechanism operating to withdraw the prongs from contact withthe tab after the tab has reached the position of register upon a sheetof material, and pressing rollers for pressing the tabs against thesheet material.

'1. In a machine for preparing and afilxingreenforcing tabs to' sheetmaterial, a member carrying a supply of reenforcing tab material; tabforming mechanism comprising a die cutting unit having a shearing punch,a scoring knife and a tab severing knife; a tab applying wheel having atthe periphery thereof prongs for engaging a 'tab and registering it uponsheet material, mechanism operating to withdraw the prongs from contactwith .the tab, and pressing rollers for pressing the tabs to the sheets.

8. In a machine for making and ailixing reenforcing tabs .to sheets ofmaterial, a' member carrying a web of ieenforcing tab material; tabforming means comprising a die cutting unit having scoring, punching andtab severing means; rolls tor advancing the tabs singly andsuccessively, a. tab applying wheel with prongs on the periphery thereofto engage each tab as 'it is advanced and for delivering the tabs toysuperposed position upon the traveling sheets,

mechanism to release the tab engaging means, and pressing rollers forpressing the tabs against the` sheets.

i 9..In a box making machine of the class described, a conveyormechanism, means for applying adhesive to predetermined areas of boxescasas blanks, a member carrying a web of reeniorcing material; tabforming means comprising a die cutting unit having scoring, punching andweb Vsevering means; rolls for advancing the tabs singly andsuccessively, a. tab applying wheel with prongs on the periphery thereofto engage each tab as it is advanced, mechanism oper-- ating to releasethe tab engaging means from contact with the tab, pressing rollers forrmly pressing the tabs to the sheets, a roller for applying a stripe ofadhesive to an'edge of the traveling blank, and means for foldingopposite side areas of the blank toward each other.

MELVIN H. SlDEBOTHAM.

